All of the following are acceptable ways to name the angle shown except?

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

Which shows the correct substitution of the values a, b and c from the equation 1=-2x+3x^2+1

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)